Sequenzy Email Design System API
The Email Design System API from Sequenzy — 1 operation(s) for email design system.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Sequenzy Email Design System API
description: Sequenzy API for managing subscribers, tags, events, sequences, and transactional emails
version: 1.0.0
servers:
- url: https://api.sequenzy.com/api/v1
description: Production server
- url: https://api.sequenzy.com/v1
description: Legacy production server alias
security:
- bearerAuth: []
tags:
- name: Email Design System
paths:
/email-design-system:
get:
operationId: getEmailDesignSystem
summary: Get email design system
description: Returns the company's effective email design system - the visual identity every AI-generated email (campaigns and sequence steps) renders inside. The identity is stored as the company's emailDesignPrompt direction text; tokens are parsed from that text, with unstated tokens derived deterministically from brand context. isDefault is true while the identity is purely derived.
tags:
- Email Design System
responses:
'200':
description: Email design system returned
content:
application/json:
schema:
type: object
properties:
success:
type: boolean
example: true
designSystem:
$ref: '#/components/schemas/EmailDesignSystem'
directionText:
type:
- string
- 'null'
description: The raw design direction text the tokens were parsed from; null when the company has none yet.
isDefault:
type: boolean
description: True while the identity is purely derived from brand context.
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'404':
description: Company not found
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'503':
$ref: '#/components/responses/TransientDatabaseUnavailable'
patch:
operationId: updateEmailDesignSystem
summary: Update email design system
description: Adjusts the company's email design system. This is a partial update - only the passed fields change - and it affects every future AI email generation and sequence enrichment. The adjustment is written into the company's emailDesignPrompt direction text (the single source of truth) - the new identity's sentences are prepended and custom prose the text carried is preserved below them. Pass reset true to clear the direction text and return to the brand-derived defaults.
tags:
- Email Design System
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
properties:
designCode:
type: object
additionalProperties: false
description: Partial visual-grammar adjustment; omitted tokens keep their current value.
properties:
kickerStyle:
type: string
enum:
- chip
- letterspaced
- none
description: How eyebrows above titles render.
titleAlignment:
type: string
enum:
- left
- center
buttonShape:
type: string
enum:
- rounded
- pill
dividerStyle:
type: string
enum:
- line
- space
density:
type: string
enum:
- airy
- compact
openerTreatments:
type: array
description: The opener treatments this company's emails may use, primary first.
items:
type: string
enum:
- hero-image
- hero-color
- header-hero
- editorial-masthead
- title-led
compositionSpine:
type: string
enum:
- hero-led
- editorial
- product-spec
description: Which worked-example skeleton anchors generation.
reset:
type: boolean
description: true clears the direction text and returns to brand-derived defaults. Cannot be combined with designCode or compositionSpine.
examples:
editorial-identity:
summary: Switch to a typography-first editorial identity
value:
compositionSpine: editorial
designCode:
kickerStyle: letterspaced
openerTreatments:
- editorial-masthead
- title-led
reset:
summary: Return to the brand-derived identity
value:
reset: true
responses:
'200':
description: Email design system updated
content:
application/json:
schema:
type: object
properties:
success:
type: boolean
example: true
message:
type: string
example: Updated the email design system and rewrote the design direction text to match.
designSystem:
$ref: '#/components/schemas/EmailDesignSystem'
directionText:
type:
- string
- 'null'
description: The rewritten direction text now stored on the company; null after a reset.
isDefault:
type: boolean
'400':
description: Invalid design system value
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'404':
description: Company not found
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'409':
description: The design system was modified concurrently by another request; retry the update.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'503':
$ref: '#/components/responses/TransientDatabaseUnavailable'
components:
headers:
RetryAfter:
description: Number of seconds to wait before retrying the request.
schema:
type: integer
minimum: 1
example: 1
responses:
TransientDatabaseUnavailable:
description: The database was temporarily unavailable. The request may be retried after the delay in Retry-After.
headers:
Retry-After:
$ref: '#/components/headers/RetryAfter'
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
example:
success: false
error: The service could not reach its database for a moment. Retry the request.
code: SERVICE_UNAVAILABLE
schemas:
Error:
type: object
properties:
success:
type: boolean
example: false
error:
type: string
example: Error message
code:
type: string
description: Optional stable machine-readable error discriminator when available.
example: COMPANY_CREATE_REQUIRES_PERSONAL_KEY
retryable:
type: boolean
description: Whether retrying the request can recover from the error.
issues:
type: array
description: Field-level problems with the request, when the endpoint reports them. Up to ten entries; `error` summarizes the first three.
items:
$ref: '#/components/schemas/InputIssue'
required:
- error
InputIssue:
type: object
properties:
path:
type: string
description: Dotted field path, such as `audience.subscriberIds[0]`. Empty when the problem is with the request body itself.
example: kind
message:
type: string
description: What is wrong with the field.
example: must be "add_tags"
allowedValues:
type: array
description: Accepted values when the field only takes a fixed set of values.
items: {}
example:
- add_tags
required:
- path
- message
EmailDesignSystem:
type: object
description: The visual identity every AI-generated email renders inside, parsed from the company's design direction text.
required:
- version
- designCode
- compositionSpine
- source
properties:
version:
type: integer
example: 1
designCode:
type: object
description: The locked visual grammar applied to every generated email.
required:
- version
- kickerStyle
- titleAlignment
- buttonShape
- dividerStyle
- density
- openerTreatments
properties:
version:
type: integer
example: 1
kickerStyle:
type: string
enum:
- chip
- letterspaced
- none
titleAlignment:
type: string
enum:
- left
- center
buttonShape:
type: string
enum:
- rounded
- pill
dividerStyle:
type: string
enum:
- line
- space
density:
type: string
enum:
- airy
- compact
openerTreatments:
type: array
items:
type: string
enum:
- hero-image
- hero-color
- header-hero
- editorial-masthead
- title-led
compositionSpine:
type: string
enum:
- hero-led
- editorial
- product-spec
description: Which worked-example skeleton anchors email composition.
source:
type: string
enum:
- derived
- custom
description: derived when every token comes from brand derivation; custom when the direction text carries the identity.
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: API key passed as Bearer token